midrender/revideo ? reverse-engineered prompt

Build me a TypeScript project for creating videos with code. I want to be able to describe a scene in plain TypeScript, things like shapes, text, images, video, audio, and animations, then render that scene into a video file from code or the command line.

It should also have a simple React based browser preview so I can play the same scene in the browser while I’m working on it, and ideally pass in dynamic inputs for previews and final renders. Scenes should feel scriptable, like a generator style timeline where I can wait, animate, and control components over time. Please include support for synced audio and video, and make rendering work in a headless environment so it could run on a server too. If parallel rendering makes sense, add that as well.

A small starter example scene would be great, something animated and visual. Keep it clean and easy to extend. If you need details, look up the current docs online and follow the intended API style.